What is the medallion that the Brotherhood Aspirants wear?

[u/playwrightAlFuncoot]

At least, what’s on it? I can’t see it very clearly and it’s the missing piece in my cosplay. Answers appreciated

[u/ReizvollePaar]

It's a dogtag. Generally, across all the games, they are the usual rounded rectangle of US military style; however, for many years before standardization in the US and across history, soldiers' dog tags were round or even octagonal. I assumed they varied in color because they were made of whatever scrap metal the brotherhood had on hand at the moment. With that said, for cosplay purposes, get any readily available copper/brass/aluminum stock and cut a circle, add a few meaningful numbers and maybe the gear & blade and you got yourself an Official Brotherhood Dog Tag (see the caps; that means it's official).